Pre-Roll Cone Filling Machines: How They Work, Cost, and Payback

Written by Lia Thompson, packaging specialist at Creative Labz. Last updated October 3, 2026.

Every growing pre-roll brand hits the same wall. Hand-filling cones works for a few dozen at a time. Past that, labor costs climb, weights drift, and orders back up. A cone filling machine fixes that, but it's a real purchase, so the question is simple: when does it pay for itself?

This guide covers how cone filling machines work, how to fill pre-rolls with one step by step, what they cost, how to choose the right capacity, and how to estimate payback with your own numbers.

How a Cartridge-Style Pre-Roll Machine Works

Most small and mid-size brands use cartridge-style fillers. Empty cones load into a cartridge, a plate with a fixed number of cone slots. Ground flower is spread across the top, and a vibration table shakes it down into every cone at once. The cones are then tamped, closed, and pulled out together.

Because every cone in the cartridge fills in the same pass, you get a full batch of matching pre-rolls in roughly the time it takes to hand-fill a few. That consistency matters as much as the speed. Customers notice when one joint in a pack is loose and the next is packed tight.

How to Fill Pre-Rolls with a Cone Filling Machine

The exact parts vary by kit, but a cartridge filling session follows the same basic steps:

1. Prep the flower. Grind to a consistent medium-fine texture and pull out stems and seeds. Flower that's too fine packs tight and burns hot. Flower that's too coarse leaves air pockets and canoes.
2. Load the cones. Set up the cartridge with its riser and place an empty cone, open end up, in every slot.
3. Add flower. Spread ground flower evenly across the top of the cartridge.
4. Vibrate. Run the vibration table so the flower settles down into every cone. Add more flower and repeat until the cones are full.
5. Tamp and top off. Use the tamping tool to pack each cone to the same firmness, then top off any that settled low.
6. Close and check. Pull the cones, twist or fold the tips closed, and weigh a few from each batch to confirm your fill weight.
7. Package right away. Move finished pre-rolls into tubes or boxes so they don't dry out. Our guide on how long pre-rolls last covers packaging for freshness.

Pre-Roll Machine Sizes and Capacities

Each cartridge is made for one cone length, so start with the cone you sell. Our pre-roll filling machines come in the three most common sizes:

• 70mm (dogwalker): small single-serve pre-rolls, often sold in multi-packs
• 98mm: the standard full-size pre-roll
• 109mm (king size): larger pre-rolls and premium singles

Every size comes in cartridges that fill 7, 19, 55, or 121 cones per batch, and the 98mm and 109mm also come in a 315-cone version. The small cartridges are an inexpensive way to test a product line. The larger ones are built for daily production.

You can buy a cartridge by itself or as a starter kit. Kits add a vibration table and stabilization mat to the cartridge, riser, and tamping tool, so you have a full filling station out of the box.

What a Pre-Roll Machine Costs

Here's Creative Labz pricing at the time of writing. Check each product page for current prices.

The machine is a one-time cost. Your per-unit costs stay the same either way: flower, pre-roll cones, and pre-roll packaging such as doob tubes or child-resistant boxes. What a machine changes is labor and waste.

How to Work Out Payback

You only need three numbers, and they should be your own:

1. Hand-filling rate: how many cones one person fills per hour by hand. Time a real session.
2. Machine rate: how many cones the same person fills per hour with a cartridge, counting loading, tamping, and closing.
3. Labor cost per hour, including payroll taxes and overhead.

Labor cost per cone is your hourly cost divided by cones per hour. Your savings per cone is the hand-filled cost minus the machine cost. Divide the machine's price by the savings per cone, and you have the number of pre-rolls it takes to pay for itself.

An example: say labor costs you $20 an hour. By hand, a worker fills 40 cones an hour, which is 50¢ of labor per cone. With a 121-cone kit, say that worker fills 300 an hour, or about 7¢ per cone. That saves roughly 43¢ per pre-roll, so a $619 starter kit pays for itself after about 1,440 pre-rolls. At 500 pre-rolls a week, that's about three weeks. These figures are only an illustration. Time your own batches, because speeds vary with grind, cone size, and experience.

Savings That Don't Show Up in the Math

• Less wasted flower. Even fills mean fewer underweight rejects to empty and redo, and fewer overpacked cones giving product away.
• Consistent weights. Matching weights keep your labels accurate and your wholesale buyers happy. Spot-check finished pre-rolls on a scale.
• Room to grow. When a big order comes in, you add batches instead of hiring.
• More value from small buds. Pre-rolls turn smalls and shake into a sellable product. See how to maximize profit on shake with pre-rolls.

Is a Pre-Roll Machine Worth It for You?

A machine usually makes sense if:

• You fill more than a few hundred pre-rolls a week.
• Consistent weights matter for your labels or your wholesale buyers.
• Time spent filling is pulling staff away from trimming, packing, or selling.

If you only fill a handful at a time, a 7- or 19-cone cartridge is a low-cost way to speed things up without buying a full station.

Frequently Asked Questions

Do I need a different machine for each cone size?

You need a cartridge made for each cone length. A 98mm cartridge won't hold 109mm cones properly, so plan on one cartridge for each size you sell.

What does the vibration table do?

It shakes ground flower evenly down into every cone in the cartridge, so each one fills to the same density without hand-packing.

What grind works best in a pre-roll machine?

A consistent medium-fine grind. Remove stems and seeds, which can clog the cone tip or tear the paper.

How should I package pre-rolls after filling?

Most brands use doob tubes or child-resistant pre-roll boxes. Read What Is a Doob Tube and How to Use It? and Pre-Roll Cones: Types and Differences to match your cones and packaging.

Build Your Pre-Roll Station

Creative Labz carries cartridge fillers and vibration tables in 70mm, 98mm, and 109mm, cones in every common size, and the packaging to finish them. Shop pre-roll filling machines and get your production off the hand-rolling treadmill.